The CCH2O air hose connects Aqua Pore Air Diffusers to CCH2O air manifolds. The white, 100% non-translucent design prevents heat absorption, keeping air cooler before it enters the nutrient solution. Suitable for all DIY hydroponic applications. Made from durable LDPE. Manufactured in CA. Comes standard with all Under Current® Systems. Fits standard air stones. This item is drop ship only.